作者：Jianchun Jiang; Yongqing Zhang; Jiahang Zhou; Yizhou Jiang; Yunbo Li *
关键字：gold nanowires,oleylamine,electronic materials,H2S gas
论文来源：期刊
具体来源：https://onlinelibrary.wiley.com/doi/10.1002/adem.202200509
发表时间：2022年

Ultrathin gold nanowires (AuNWs) have an important role and promising

applications in areas of wearable sensors, matter detection, and

flexible transparent electronic materials. But oleylamine (OAm) ligand

on the ultrathin AuNWs surface leads to high junction resistance and the

inherent Rayleigh instability leads to decomposition into gold spheres

within a few days. To eliminate these two disadvantages, herein, the

implementation of one facile H2S gas treatment method to

improve the conductivity and stability of ultrathin AuNWs is tried. The

conductivity of AuNWs on the interdigital electrode can be improved by

4?×?107 times because the AuNWs became bent and cross-linked, due to the H2S

exchange of the ligand OAm. In addition, the conductivity of the

three-layer ultrathin AuNW film on polyethylene terephthalate (PET) can

be improved by at least 2000 times. The ultrafine structure of AuNWs can

be maintained for more than 1 week at room temperature, which

attributes to H2S that can protect the surface structure of

AuNWs. The findings highlight a new method of the ultrathin AuNWs for

exceeding improvement in electronic conduction and stability.